Proppant vessel



FIG. 1 is an upper perspective view of the proppant vessel showing our deign. design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is an opposite a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the proppant vessel in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a proppant vessel, as shown and described. 